Java language constraint is a poor criteria for surefire report generation

With the expansion of maven as a project management tool for other (non-Java) languages, the 'canGenerateReport' function in SurefireReportMojo.java limits the scope of the report plugin to only Java projects. This limitation prevents the use of surefire xml as a standard format for test reports. Perhaps a more relevant approach to the function would be to test for the existence of the 'surefire-reports' folder and relevant files within that folder.